Meth using mums and children's brains

Methamphetamine abuse is a big problem in the U.S. and in 2007 about 13 million Americans used the drug. The children of mothers who took methamphetamine when they were pregnant often have developmental abnormalities and researchers at the University of Hawaii carried out brain scans on 29 3- and-4-year-olds whose mothers used amphetamine and 37 3- and-4-year-olds whose mothers had not. They found that water molecules moved much more slowly through the white brain matter of the children whose mothers had used methamphetamine suggesting that it was more densely-packed.

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http://uk.reuters.com/article/healthNews/idUKTRE53E70520090415?feedType=RSS&feedName=healthNews&pageNumber=2&virtualBrandChannel=0